Circuit breaker



Aug. 23, 1927. Lear- 30 H. HINDS CIRCUIT BREAKER Filed 001m 51 1925 IN V EN TOR.

ATTORNEY! Patented Aug. 23, 1927.

UNITED ST A]? as PATENT OFFICE.

HUBER! KINDS; SPRINGFIELD, ILLINOIS.

CIRCUIT BREAKER.

Application fi1ed-0ctober 31, .1925 Serial No. 66,001.

This invention relates to a classof devices commonly known as timers or. commutators adapted to be'used in'connection with the more successfully maintain a substantial and constant contact between the t mer brushes or contact points and the moving.

rotor with which they are adapted to operate in servingas a circuit breaker.

The particular object of my invention is to provide an arrangement whereby the rotor in a circuit breaker may be formed into a plurality of'segments formed inopposite angular pairs against the circumference on which the timer brushes may successfully maintain a substantial contact continuously over the same kind of metallic surface and not have tobe constantly rubbing over first metal segment and then an insulating segment to break the circuit.

provide a circuit breaker whose contact brushes may be adjustable so as to vary the length of time during which theignition circuit is broken. I

provide a mountv for the. contact brushes that will constantly provide substantial springy resilient pressure against the brush to more successfully maintain steady contact with all points on the periphery of the rotor regardless of the speed of the rotor.

I attain the objects of my invention above mentioned, by the device described in detail in the annexed specifications recited in the claims and illustrated in the accompanying drawings; in which like reference numerals will refer to like parts in the several figures:

Referring to the figures, Figure 1 is a top view of the circuit breaker of my invention shown with the distributor cap removed.

Fi 2 is a vertical section m-m; of the circult breaker of my invention.

Fig. 3 is a perspective of the brush holder used in this circuit breaker.

Fig. 4 is a cross section showin the method of mounting the brush on the lirush holder.

Fig. 5 is an adjustable fulcrum mounting for thebrush holder.

Fig. 6 is a perspective of T bolt used for A. further object of my invention is to.

A further object of my invention is to" in such a way as will enable the brush pointsholding the brush holder in substantial operative position.

Fig. 7 is an end view'of a rotor for the circuit breaker of my invention, showing how a rotor of six segments would be used.

Referring now to the details of the construction and the normal operation of the deviceofmy invention, avrotor shown in Fig. 1 is rotatably mounted within the case mg -28- and held into operative position by a nut-washer 6. This rotor is pro- .vided with oppositely disposed segments 1- and -2 connected by wire and mounted in the insulation 5 of the rotor. Another pair ofinsulation segments 3-- and 4 is likewise mounted. in the 'rotor and connected by wire.

they do not need to come in contact with any insulation material in breaking the circuit. v

Another'important purpose of thiscircuit breaker is accomplished by the. manner. in whichthe'brushes are mounted. It is desired to mountthe brushes in such a way that the brush will closely follow the surface of the rotor segments at various speeds of the rotor without missing any surface by jumping. To accomplish this purpose, brushes 7" and 10 are mounted in a corresponding pair of detachable clamps -8- and 9- respectively. These brushes are clamped to the loose ends of a pair of leaf springs -11- and --12-. 11 is adjustably mounted within the easing 28- upon an adjustable fulcrum -13- and held, into operative position by T bolt 15-and thus secured by nut 21 which is adapted to force the draw bar 31 of T bolt -15 to pull outwardly against the forks -32- of leaf spring 11 thus pivotally urging brush 7 against the rotor segments.

Spring 11 is provided with a kink 33- adaptedto snugly fit over the end of fulcrum lug -13 and it will be seen that by having brush -7 so mounted on such aspring that the result will be a tendency for t e brush to follow the surface of the rotor Spring I segments very closely even if they do happen to become worn in places.

It will be seen that by adjusting nut -2l to a tighter position on the thread that brush 7 is made to press more firmly against the rotor segments.

Fulcrum 13- is adjusted by loosening screw -22-- slightly which screws into the fulcrum 1S- and is slidably adjustable within a slot of the casing 28-.

Spring --l2-- is pivotally mounted on lug 1it and made adjustable only by tightening nut causing T bolt -16- to pull against forks -18 the result of which adj ustment is to press brush 10 more firmly against the rotor segment.

it will be seen in Fig. 1 that brushes 7 and 10 are adapted to be normally positioned in a circumferential spate relation of somewhat less than 180 degrees.

3y having brush -1lcircumferentially adjustable within the casing .28- it will be seen that the period of time during which the circuit may be broken may be varied within the limits of the adjustment.

An aperture l9- in the casing -28 is provided as means of access to the interior of the casing. V

The ignition circuit in passing through the circuit breaker enters through wire 50*, brush 10 passes through the rotor segments where the circuit is periodically broken by the turning of the rotor and is grounded by passing out through brush 7-, spring ll.- through the casing and is grounded "to motor or the frameot' the car.

Fig. 7 shows how opposite segments are connected by wire where for instance wire -26 connects segment --27'- with the opposite segment -2T'. This View also shows how a plurality of segments may b moulded into the proper position in a suitable disk of insulation material To those skilled in, the art of automobile mechanics it will be evident that certain minor changes may be made in the structural details pertaining to the mounting ct the brushes or the mounting of the segments in the rotor, but the preferred arrangement is shown in Fig. l.

In Fig. l it is shown the way in which brush 10 is insulated from the brush holder -l2-.

Having thus described the nature of my invention, what I claim is:

l. A circuit breaker of the chzniactcr described comprising a rotor member ha ring: oppositely disposed metallic segments electrically connected molded within a circular disc of insulation material; said oppo itely disposed connected segments insulatspaced from adjacent segments or. li in kind in the disc also electrically connected; a pair of contact brushes mounted within a casing secured to the end. oi. corresponding leat springs adapted to sul'ist-antially and resiliently urge said lnushes into contact with the segments of a disc; said springs support-- ing said brushes adjustahly mounted within a casing so as to provide variation in the (ir cumferential space relation between said brushes.

2. A circuit breaker comprising in i0- operative combination, a plurality o't oppositely disposed angular segments moi-:lcd in a disc of insulation material and electrically connected; said segments closely spaced from and insulated from adjacent segments in the disc; adjustable contact brushes for the circuit breaker mounted on pivoted leat springs adapted to be circumferentially adjust-ed so as to provide variation in the circun'rterential space relation between contact brushes mounted in the casing.

In witness whereof I hereunto set my hand this 1st day of August, A. D. 1925.

' HUBERT HINDS. 

